Eventuri carbon turbo inlets BMW 5 Series F90 M5 -

The intake was road tested using Dragy to record acceleration from 60-130mph. The tests were carried out on the same stretch of road and on the same day to keep variables to a minimum. The results show that with the addition of grips alone, acceleration times from 60-130 mph are reduced by 0.12 seconds, which represents a significant improvement at those speeds.

Part number:

• 
  
• EVE-F9XM5M8-CHG : BMW F90 M5, F92 M8 Carbon turbo intakes
  

The Eventuri F90 M5 inlets are made from high-temperature prepreg carbon fiber and are assembled with a number of other components designed to serve a specific purpose and manufactured to the highest standards.

Each input set is composed of:

• 
  
• Pair of prepreg carbon inlets
  
• CNC machined turbo flanges
  
• CNC machined relief valve assembly
  

DEVELOPMENT

During development we designed 2 versions for comparison. One set for use with our current intake as well as the stock airboxes and another set with larger ports for use with an oversized intake system. Both designs were prototyped and tested on high-powered F90 M5s. The results showed that the gains between the two sets were the same and so we moved forward with inputs that could also be used with our current intake system. The diagram shows the 2 projects that have been developed.

COMPARIONS

Performance improvements are achieved by providing turbochargers with a less resistive flow path which allows them to reach peak boost earlier in the rpm range. Comparing the stock inputs, the differences are evident. Where stock tubes narrow immediately after connecting to the intakes, our tubes maintain a larger diameter and the reduction to stock turbos is achieved with an internal radius on the machined flanges. This allows for a larger volume while maintaining a smooth flow path. One of the drawbacks to the oversized intakes was that they more aggressively downsized to fit stock turbos, which created some flow constraints.